KR102503345B1 - Apparatus for manufacturing nanofiber filter with real-time evaluation means for improving thickness uniformity - Google Patents

Abstract

The present invention relates to a nanofiber filter manufacturing apparatus equipped with a real-time evaluation means for improving thickness uniformity for manufacturing nanofiber filters by electrospinning.
The present invention includes a nanofiber spinning unit for depositing a nanofiber filter on top of an immersion plate by electrospinning a polymer solution in the form of nanofibers; a moving unit for moving the position of the immersion plate on a horizontal plane; a light irradiation unit for irradiating light toward the nanofiber filter from an upper portion of the immersion plate; an image acquisition unit for acquiring an image of the nanofiber filter by photographing the nanofiber filter deposited on the immersion plate from a lower part of the immersion plate; A thickness measurement unit for analyzing the image to measure the light transmittance of each position of the nanofiber filter for the light and measuring the thickness of each position of the nanofiber filter based on the light transmittance of each position of the nanofiber filter; and a drive controller for moving the immersion plate by controlling the driving of the moving unit so that the thickness of each position of the nanofiber filter corresponds to a predetermined reference thickness so that the nanofiber filter is deposited on the top of the immersion plate with a uniform thickness. The technical summary is a nanofiber filter manufacturing apparatus equipped with a real-time evaluation means for improving thickness uniformity, characterized in that the configuration.

Description

Apparatus for manufacturing nanofiber filter with real-time evaluation means for improving thickness uniformity}

The present invention relates to a nanofiber filter manufacturing apparatus equipped with a real-time evaluation means for improving thickness uniformity for manufacturing nanofiber filters by electrospinning.

In general, nanofibers refer to fibers having a thickness of several nanometers to hundreds of nanometers, which is a thickness of a nanometer unit. And, the nanofiber filter means a membrane having a porous structure formed by intertwining a plurality of nanofibers with each other.

These nanofiber filters have a large cross-sectional area, are light in volume compared to the area, and have excellent permeability, so they can be used in various industrial fields such as medical, bio, energy, environment, textile, and sensors, and are in the spotlight.

On the other hand, the nanofiber filter is produced by electrospinning, which has excellent productivity and is actively commercialized.

Here, in the electrospinning method, a strong electric field is applied to the polymer solution in the process of ejecting the polymer solution into the air to induce a strong charge in the polymer solution, and the polymer solution is spun in the form of nanofibers by the strong repulsive force between the charges, and the spun nanofibers It is a manufacturing method in which nanofiber filters are formed as they are deposited in an entangled form.

However, as the electrospinning method uses the repulsive force between charged charges, random behavior occurs in nanofibers due to bending instability.

Due to the non-magnetic behavior of the nanofibers, the nanofibers are not deposited in a uniform thickness, but deposited in a Gaussian distribution, and the thickness decreases from the center to both edges, so that the thickness of the nanofiber filter is not uniform.

Accordingly, not only the reliability of the manufacturing process and manufacturing apparatus according to the electrospinning method is inevitably lowered, but also the quality of the nanofiber filter manufactured by the electrospinning method is inevitably lowered.

Therefore, in order to increase the reliability of the electrospinning method and improve the quality of the nanofiber filter, it is urgent to improve the structure of the nanofiber filter manufacturing apparatus to minimize the thickness error by position between the nanofiber filters caused by the electrospinning method.

Republic of Korea Patent Registration No. 10-0893933, 2009.04.21. Republic of Korea Patent Registration No. 10-1622054, 2016.05.17. Republic of Korea Patent Registration No. 10-0640235, 2006.10.30.

The present invention was invented to solve the above problems, in order to increase the reliability of the electrospinning method and improve the quality of the nanofiber filter, to minimize the thickness error by position between the nanofiber filters caused by the electrospinning method. After measuring and evaluating the thickness of each position of the nanofiber filter deposited on the immersion plate by electrospinning, based on the measurement and evaluation results, the position of the immersion plate can be moved to make the thickness of each position of the nanofiber filter uniform. The purpose is to provide a nanofiber filter manufacturing apparatus equipped with a real-time evaluation means for improving thickness uniformity.

The object of the present invention is not limited to the purpose mentioned above, and other objects not mentioned above can be clearly understood from the description below and can be fully included in the object of the present invention.

To achieve the above object, the apparatus for manufacturing a nanofiber filter equipped with a real-time evaluation means for improving thickness uniformity according to the present invention is to deposit a nanofiber filter on top of an immersion plate by electrospinning a polymer solution in the form of nanofibers. fiber spinning unit; a moving unit for moving the position of the immersion plate on a horizontal plane; a light irradiation unit for irradiating light toward the nanofiber filter from an upper portion of the immersion plate; an image acquisition unit for acquiring an image of the nanofiber filter by photographing the nanofiber filter deposited on the immersion plate from a lower part of the immersion plate; A thickness measurement unit for analyzing the image to measure the light transmittance of each position of the nanofiber filter for the light and measuring the thickness of each position of the nanofiber filter based on the light transmittance of each position of the nanofiber filter; and a drive controller for moving the immersion plate by controlling the driving of the moving unit so that the thickness of each position of the nanofiber filter corresponds to a predetermined reference thickness so that the nanofiber filter is deposited on the top of the immersion plate with a uniform thickness. can be configured.

The immersion plate is a conductive and opaque material, and includes a first immersion plate standing vertically; And the immersion space, which is a void area, is provided between the first immersion plate and the nanofiber filter to be immersed. A second immersion plate made of one material;

The immersion plate is a conductor and may be made of a transparent material.

The moving unit includes a fixed frame seated on the floor; First guide rails disposed on both sides of the upper portion of the fixed frame in the X-axis direction, respectively; first movable blocks installed on top of the first guide rail to be linearly movable in the X-axis direction along the first guide rail; first driving means for linearly moving the first moving block according to driving control of the driving controller; a second guide rail disposed in the Y-axis direction with one end and the other end connected to the top of the first moving block; a second movable block installed above the second guide rail to be linearly movable in the Y-axis direction along the second guide rail and having one lower side of the immersion plate connected to the upper portion; and second driving means for linearly moving the second moving block according to the driving control of the driving controller.

The light irradiation unit includes a light emitting lamp for irradiating the light downward; and a diffusion plate provided under the light emitting lamp and uniformly diffusing the light to the entire surface of the immersion plate so that the light is irradiated with a uniform luminous intensity to the entire surface of the immersion plate.

The thickness measuring unit includes an image segmentation unit dividing the image into a plurality of divided images according to pixel coordinate values; Measure the light transmittance of each position of the nanofiber filter based on the luminous intensity value for each of the divided images after the nanofiber filter is deposited and the reference luminous intensity value for each of the divided images before the nanofiber filter is deposited a light transmittance measurement unit; and a thickness calculation unit for calculating the thickness of each position of the nanofiber filter by substituting the light transmittance of each position of the nanofiber filter into an equation according to the Beer-Lambert law.

이고, 상기

는 빛투과도이며 상기

는 빛의 감쇠계수이고 상기

는 나노섬유필터의 위치별 두께이다. Equation according to the Beer-Lambert law is

and the above

is the light transmittance and

is the attenuation coefficient of light and

Is the thickness of each position of the nanofiber filter.

The driving control unit matches the pixel coordinate values for classifying the divided images to correspond to the XY coordinate values on the moving unit to determine movement coordinate values on a horizontal plane corresponding to each of the pixel coordinate values. Coordinate value matching wealth; a thickness difference calculation unit for calculating a thickness difference for each position of the nanofiber filter according to a difference between the thickness of each position of the nanofiber filter and the reference thickness; A movement speed for moving the immersion plate 130 at a predetermined speed along the movement route is set along with a movement path for the immersion plate 130 to move via the movement coordinate value so that the difference in thickness of each position of the nanofiber filter is reduced. a mobile information setting unit; and a drive control signal generator for generating a drive control signal to cause the immersion plate to move at the moving speed along the moving path according to the drive of the drive unit and inputting the generated drive control signal to the drive unit.

Nanofiber filter manufacturing apparatus equipped with a real-time evaluation means for improving thickness uniformity according to the present invention according to the above configuration is the positional thickness of the nanofiber filter deposited on the immersion plate through the electrospinning method using light transmittance By measuring in real time and moving the position of the immersion plate in real time so that the thickness of each position of the nanofiber filter is uniform considering the thickness of each position of the nanofiber filter, the uniformity of the thickness of the nanofiber filter can be dramatically improved, so the nanofiber The effect of improving the quality of the filter and improving the reliability of the electrospinning method can be expected.

1 is a schematic diagram showing the overall configuration of a nanofiber filter manufacturing apparatus equipped with a real-time evaluation means for improving thickness uniformity according to a preferred embodiment of the present invention.
FIG. 2 is a cross-sectional view taken along line 'A-A' of FIG. 1 .
3 is a perspective view showing an immersion plate and a CCD camera of a nanofiber filter manufacturing apparatus equipped with a real-time evaluation means for improving thickness uniformity according to a preferred embodiment of the present invention.
4 is a cross-sectional view taken along line 'A-A' of FIG. 2 .
5 is a block diagram showing the configuration of the thickness measurement unit of the nanofiber filter manufacturing apparatus equipped with real-time evaluation means for improving thickness uniformity according to a preferred embodiment of the present invention.
Figure 6 is a block diagram showing the configuration of the driving control unit of the nanofiber filter manufacturing apparatus equipped with a real-time evaluation means for improving the thickness uniformity according to a preferred embodiment of the present invention.
Figure 7 shows the luminous intensity change of the image of the nanofiber filter manufactured by the nanofiber filter manufacturing apparatus equipped with a real-time evaluation means for improving thickness uniformity according to a preferred embodiment of the present invention over time.
8 shows the luminous intensity change of the image of the nanofiber filter manufactured by the conventional nanofiber filter manufacturing apparatus over time.

The present invention is a real-time evaluation means for improving thickness uniformity that can manufacture a nanofiber filter that forms a porous structure while nanofibers are entangled with each other by spinning a polymer solution in the form of nanofibers with a thickness of nanometers by electrospinning. It relates to a nanofiber filter manufacturing apparatus equipped with this.

In particular, the nanofiber filter manufacturing apparatus equipped with a real-time evaluation means for improving the thickness uniformity according to the present invention can increase the reliability of the manufacturing process and device by eliminating the thickness non-uniformity of the nanofiber filter and improve the quality of the nanofiber filter. It is a great feature that can be improved.

This feature measures the thickness of each position of the nanofiber filter in the process of depositing the nanofiber filter on the immersion plate by spinning the polymer solution by electrospinning, and the immersion plate is placed on a horizontal surface so that the thickness of each position of the nanofiber filter becomes uniform. It can be achieved by a configuration that moves in the X-axis and Y-axis directions.

Hereinafter, a nanofiber filter manufacturing apparatus equipped with a real-time evaluation means for improving thickness uniformity according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

An apparatus for manufacturing a nanofiber filter equipped with a real-time evaluation means for improving thickness uniformity according to a preferred embodiment of the present invention, as shown in FIGS. It may be composed of an irradiation unit 300, an image acquisition unit 400, a thickness measuring unit 500, and a driving control unit 600.

First, the nanofiber spinning unit 100 may manufacture a nanofiber filter by electrospinning a polymer solution in the form of nanofibers.

To this end, the nanofiber spinning unit 100 includes a syringe pump 110 for pressurizing the polymer solution, a spinning nozzle 120 for spinning the polymer solution pressurized by the syringe pump 110 in the form of nanofibers, and a spinning nozzle Nanofibers are deposited on the deposition plate 130 by applying a high voltage to the deposition plate 130 in which the nanofibers spun from 120 are deposited to form a nanofiber filter, the spinning nozzle 120, and the deposition plate 130. It may be composed of a high voltage application module 140 to enable.

At this time, according to the embodiment shown in FIGS. 3 and 4, the immersion plate 130 is vertically erected, disposed in the left and right directions, and includes a first immersion plate 131 made of a conductive and opaque material, and a second immersion plate 132. The second immersion plate 132, which is arranged spaced apart in parallel to one side of the immersion plate, is erected vertically, and is made of a conductive and opaque material, is installed under the first immersion plate 131 and the second immersion plate 132 to form the first immersion plate 132. It may be composed of a support holder 134 supporting the immersion plate 131 and the second immersion plate 132 to be spaced apart in parallel.

Then, the nanofiber filter is an immersion space, which is a void area that exists between the first immersion plate 131 and the second immersion plate 132 due to the separation between the first immersion plate 131 and the second immersion plate 132 ( 133) may be deposited in a form extending over the upper surfaces of the first immersion plate 131 and the second immersion plate 132. In addition, a through space 135 penetrating vertically to correspond to the immersion space 133 may be formed in the support holder 134 . That is, when light is irradiated downward toward the nanofiber filter on the top of the nanofiber filter, the light passing through the nanofiber filter can be irradiated downward through the immersion space 133 and the through space 135.

Meanwhile, although not separately shown, the immersion plate 130 may be composed of a transparent conductive plate (not shown) made of a material having excellent light transmittance and a conductor such as an ITO film, which is configured independently and installed horizontally on the left and right according to another embodiment.

The nanofiber filter can then be deposited on the upper surface of the transparent conductive plate. In addition, when light is irradiated downward toward the nanofiber filter on the top of the nanofiber filter, the light transmitted through the nanofiber filter and the transparent conductive plate may be irradiated downward.

Next, the moving unit 200 may move the immersion plate 130 horizontally on a horizontal surface so that the nanofiber filter in the nanofiber-emitting unit 100 is deposited on the top of the immersion plate 130 in a uniform thickness. .

To this end, the moving unit 200 includes a fixed frame 210 seated on the floor, a first guide rail 220 disposed in the X-axis direction on a horizontal plane on both sides of the upper portion of the fixed frame 210, and a first guide rail The first movable block 230 is installed on the upper part of the 220 to be linearly movable in the X-axis direction along the first guide rail 220, and the first movable block 230 is driven according to the drive control signal. A first driving means 240 for linear movement, a second guide rail 250 disposed in the Y-axis direction on a horizontal plane with one end and the other end connected to the upper portion of the first moving block 230, and the second guide rail A second movable block 260 installed on the upper part of the 250 to be linearly movable in the Y-axis direction along the second guide rail 250 and having one lower side of the immersion plate 130 connected to the upper part, and a drive control signal It may be configured as a second driving means 270 for linearly moving the second moving block 260 by driving according to.

That is, in the moving unit 200, as the first driving means 240 and the second driving means 270 are driven by the driving control signal, the first moving block 230 and the second moving block 260 are X, respectively. While moving in the axial and Y-axis directions, the immersion plate 130 may be moved in a horizontal direction on a horizontal plane.

Next, the light irradiation unit 300 moves downward from the top of the nanofiber filter toward the nanofiber filter in order to measure the thickness of the nanofiber filter deposited on the top of the immersion plate 130 in the nanofiber radiation unit 100. light can be investigated.

To this end, the light irradiation unit 300 is installed at a certain distance from the upper part of the immersion plate 130 and radiates light downward, and the light emitting lamp 310 installed below the light emitting lamp 310 and the light emitting lamp 310 ) to diffuse the light irradiated from the immersion plate 130 so that the front surface of the nanofiber filter deposited on the top of the immersion plate 130 is irradiated with uniform illumination, and vertically on both sides of the fixing frame 210, respectively. It may be composed of a pair of vertical blocking plates 330 installed to block the inflow of external light.

Next, the image acquisition unit 400 may acquire an analysis target image for the nanofiber filter by photographing the nanofiber filter deposited on the immersion plate 130 from the lower part of the immersion plate 130 .

To this end, the image acquisition unit 400 acquires an analysis target image by photographing a nanofiber filter, and then separates the luminous intensity value and the pixel coordinate value for each pixel present on the analysis target image from each other and outputs it as an electrical signal. It may consist of a CCD camera 410.

That is, the nanofiber filter deposited on the immersion plate 130 according to the operation of the CCD camera 410 may be photographed in real time, and an analysis target image for the nanofiber filter may be output in the form of an electrical signal and provided.

At this time, the CCD camera 410 may be installed with a lens facing upward in the lower part of the through space 135 of the support holder 134 so that the nanofiber filter deposited on the immersion plate 130 can be photographed from below.

However, a camera holder 420 to which one side of the CCD camera 410 is fixed may be installed below the support holder 134 of the immersion plate 130 so that the CCD camera 410 can be firmly fixed and supported.

Therefore, each pixel of the analysis target image photographed by the CCD camera 410 may have a luminous intensity value according to the light of the light emitting lamp 310 transmitted through the nanofiber filter.

Meanwhile, the CCD camera 410 captures a reference image in which the nanofiber filter does not exist, taken in a state in which the nanofiber filter is not deposited on the top of the immersion plate 130, which is a state before the nanofiber radiation unit 100 operates. can be obtained in advance.

This is done by comparing the luminance value of the pixel of the analysis target image according to the state in which the nanofiber filter is deposited with the reference luminance value of the pixel of the reference image according to the state in which the nanofiber filter is not deposited, which is the reference value. This is to ensure that the star thickness can be calculated with high reliability.

Next, the thickness measurement unit 500 may process and analyze the analysis target image acquired by the image acquisition unit 400 to measure the thickness of each position of the nanofiber filter in real time.

To this end, the thickness measurement unit 500, as shown in FIG. 5, separates the analysis target image according to the state in which the nanofiber filter is deposited and the reference image according to the state in which the nanofiber filter is not deposited, respectively, according to pixel coordinate values. Based on the image segmentation unit 510 that divides into divided images, the luminous intensity value for each divided image according to the state in which the nanofiber filter is deposited and the reference luminous intensity value for each divided image according to the state in which the nanofiber filter is not deposited It consists of a light transmittance measurement unit 520 that measures the light transmittance of each position of the nanofiber filter and a thickness calculation unit 530 that calculates the thickness of each position of the nanofiber filter based on the light transmittance of each position of the nanofiber filter. It can be.

At this time, the thickness calculation unit 530 substitutes the light transmittance for each position of the nanofiber filter into the equation according to the Beer-Lambert law defining the relationship between the incident light and the attenuation coefficient of the medium and the thickness of the medium, thereby positioning the nanofiber filter. The star thickness can be calculated with high reliability.

Here, the equation according to the Beer-Lambert law may be defined as Equation 1 below.

<Equation 1>

는 나노섬유필터의 빛투과도이며

는 빛의 감쇠계수이며,

는 나노섬유필터의 위치별 두께이다. 단, 빛의 감쇠계수는 나노섬유필터의 다양한 두께에 따른 나노섬유필터의 빛투과도를 측정한 실험을 통해 미리 산출하여 기설정될 수 있다.

is the light transmittance of the nanofiber filter

is the attenuation coefficient of light,

Is the thickness of each position of the nanofiber filter. However, the attenuation coefficient of light may be preset by calculating in advance through experiments measuring the light transmittance of the nanofiber filter according to various thicknesses of the nanofiber filter.

Therefore, the thickness measurement unit 500 applies the luminous intensity value and the preset light attenuation coefficient for each of the divided images obtained by dividing the analysis target image according to the state in which the nanofiber filter is deposited into a plurality of pieces according to the pixel coordinate values in Equation 1 By doing this, it is possible to measure and output in real time the thickness of each position of the nanofiber filter, which is classified according to the pixel coordinate value.

At this time, since the light intensity value decreases as the thickness of the nanofiber filter increases, the thickness of each position of the nanofiber filter having a size inversely proportional to the size of the light intensity value can be measured.

Finally, the driving control unit 600 considers the positional thickness of the nanofiber filter measured by the thickness measurement unit 500 so that the nanofiber filter manufactured by the nanofiber spinning unit 100 has a uniform thickness. Driving of the moving unit 200 may be controlled.

That is, the driving control unit 600 controls the driving of the moving unit 200 so that the positional thickness of the nanofiber filter becomes uniform in consideration of the positional thickness of the nanofiber filter, thereby determining the position of the immersion plate 130 on a horizontal plane in real time. can be moved horizontally.

To this end, as shown in FIG. 6 , the drive control unit 600 matches the pixel coordinate values for classifying the divided images to correspond to the XY coordinate values on the horizontal plane according to the moving unit 200, so that each pixel coordinate value Coordinate value matching unit 610 for determining the movement coordinate value on the corresponding horizontal plane, thickness difference calculation for calculating the thickness difference for each position of the nanofiber filter according to the difference between the thickness for each position of the nanofiber filter and the preset reference thickness The part 620 and the deposition plate 130 are moved at a predetermined speed along the movement path along with a movement path that allows the deposition plate 130 to move via the movement coordinate values so that the difference in thickness between positions of the nanofiber filter decreases. The movement information setting unit 630 for setting the desired movement speed and the driving control signal for moving the immersion plate 130 at the movement speed for each section along the section of the movement route by the driving of the moving section 200 are generated. It may be composed of a driving control signal generating unit 640 input to the moving unit 200 .

Here, the movement information setting unit 630 can set the movement path by dividing it into a plurality of sections based on the movement coordinate values, and can set the movement speed by dividing it into movement speeds for each section corresponding to the plurality of sections. .

Therefore, as the moving unit 200 is driven and controlled according to the driving control signal of the driving control unit 600, the immersion plate 130 of the nanofiber spinning unit 100 is moved along the set movement path at the set movement speed, and the nanofiber filter Since it is possible to reduce the thickness deviation of each position, it is possible to significantly improve the quality of the nanofiber filter manufactured by the electrospinning method.

7 and 8 show the thickness uniformity between the nanofiber filter manufactured by the nanofiber filter manufacturing apparatus of the present invention and the nanofiber filter manufactured by the conventional nanofiber filter manufacturing apparatus, respectively, according to the luminous intensity over time (t). that showed change.

That is, as shown in FIG. 7, the nanofiber filter manufactured by the nanofiber filter manufacturing apparatus of the present invention has elapsed at 7 minutes, 14 minutes, 21 minutes, 28 minutes, 35 minutes, and 42 minutes, respectively. It can be seen that the thickness uniformity of the nanofiber filter is strengthened as the luminous intensity of the image of the nanofiber filter increases and becomes uniform as it becomes.

However, as shown in FIG. 8, the nanofiber filter manufactured by the conventional nanofiber filter manufacturing device has a time t of 5 minutes, 10 minutes, 15 minutes, 20 minutes, 25 minutes, and 30 minutes, respectively. It can be seen that the thickness uniformity of the nanofiber filter decreases as the luminous intensity of the image of the nanofiber filter increases and becomes non-uniform.

The above embodiment is merely an example, and other embodiments variously modified therefrom are possible to those skilled in the art.

Therefore, the true technical protection scope of the present invention should include not only the above embodiments but also variously modified other embodiments according to the technical spirit of the invention described in the claims below.

100: nano fiber radiation unit
110: syringe pump
120: spinning nozzle
130: immersion plate
131: first immersion plate
132: second immersion plate
133: immersion space
134: support holder
135: through space
140: high voltage application module
200: moving part
210: fixed frame
220: first guide rail
230: first moving block
240: first driving means
250: second guide rail
260: second moving block
270: second driving means
300: light irradiation unit
310: light emitting lamp
320: diffusion plate
330: blocking plate
400: image acquisition unit
410: CCD camera
420: camera holder
500: thickness measuring unit
510: video segmentation unit
520: light transmittance measuring unit
530: thickness calculation unit
600: drive control unit
610: coordinate value matching unit
620: thickness difference calculation unit
630: movement information setting unit
640: drive control signal generator

Claims (8)

A nanofiber spinning unit depositing a nanofiber filter on the top of the immersion plate by electrospinning the polymer solution in the form of nanofibers;
a moving unit for moving the position of the immersion plate on a horizontal plane;
a light irradiation unit for irradiating light toward the nanofiber filter from an upper portion of the immersion plate;
an image acquisition unit for acquiring an image of the nanofiber filter by photographing the nanofiber filter deposited on the immersion plate from a lower part of the immersion plate;
A thickness measurement unit for analyzing the image to measure the light transmittance of each position of the nanofiber filter for the light and measuring the thickness of each position of the nanofiber filter based on the light transmittance of each position of the nanofiber filter; and
A driving control unit for moving the immersion plate by controlling the driving of the moving unit so that the thickness of each position of the nanofiber filter corresponds to a predetermined reference thickness so that the nanofiber filter is deposited on the top of the immersion plate with a uniform thickness. become,
the moving part
A fixed frame that is seated on the floor;
First guide rails disposed on both sides of the upper portion of the fixed frame in the X-axis direction, respectively;
first movable blocks installed on top of the first guide rail to be linearly movable in the X-axis direction along the first guide rail;
first driving means for linearly moving the first moving block according to driving control of the driving controller;
a second guide rail disposed in the Y-axis direction with one end and the other end connected to the top of the first moving block;
a second movable block installed above the second guide rail to be linearly movable in the Y-axis direction along the second guide rail and having one lower side of the immersion plate connected to the upper portion; and
A nanofiber filter manufacturing apparatus equipped with a real-time evaluation means for improving thickness uniformity, characterized in that composed of; a second driving means for linearly moving the second moving block according to the driving control of the driving control unit. According to claim 1,
The immersion plate is
A first immersion plate made of a conductive, opaque material and standing vertically; and
The immersion space is placed on one side of the first immersion plate so that the immersion space, which is a void area, is provided between the first immersion plate and the nanofiber filter to be immersed. A nanofiber filter manufacturing apparatus equipped with a real-time evaluation means for improving thickness uniformity, characterized in that consisting of a second immersion plate made of a material. According to claim 1,
The immersion plate is
A nanofiber filter manufacturing apparatus equipped with a real-time evaluation means for improving thickness uniformity, characterized in that it is made of a conductive and transparent material. delete According to claim 1,
The light irradiation unit
a light emitting lamp for irradiating the light downward; and
a diffusion plate provided under the light emitting lamp and uniformly diffusing the light to the entire surface of the immersion plate so that the light is irradiated with a uniform luminous intensity to the entire surface of the immersion plate; Nanofiber filter manufacturing apparatus equipped with an evaluation means. According to claim 1,
The thickness measuring part
an image segmentation unit dividing the image into a plurality of divided images according to pixel coordinate values;
Measure the light transmittance of each position of the nanofiber filter based on the luminous intensity value for each of the divided images after the nanofiber filter is deposited and the reference luminous intensity value for each of the divided images before the nanofiber filter is deposited a light transmittance measuring unit; and
Thickness calculation unit for calculating the thickness of each position of the nanofiber filter by substituting the light transmittance of each position of the nanofiber filter into an equation according to the Beer-Lambert law Nanofiber filter manufacturing apparatus equipped with real-time evaluation means. According to claim 6,
Equation according to the Beer-Lambert law is

Nanofiber filter manufacturing apparatus provided with real-time evaluation means for improving thickness uniformity, characterized in that.
remind

is the light transmittance and

is the attenuation coefficient of light and

Is the thickness of each position of the nanofiber filter. According to claim 6,
The drive control unit
a coordinate value matching unit that determines movement coordinate values on a horizontal plane corresponding to the respective pixel coordinate values by matching the pixel coordinate values for classifying the divided images to correspond to the XY coordinate values of the moving unit;
a thickness difference calculation unit for calculating a thickness difference for each position of the nanofiber filter according to a difference between the thickness of each position of the nanofiber filter and the reference thickness;
Movement information setting unit for setting a movement speed for moving the immersion plate at a predetermined speed along the movement route along with a movement path for moving the immersion plate via movement coordinate values so that the difference in thickness by position of the nanofiber filter decreases. ; and
and a drive control signal generating unit generating a driving control signal for allowing the immersion plate to move at the moving speed along the moving path according to the driving of the moving unit and inputting the driving control signal to the moving unit. Nanofiber filter manufacturing apparatus equipped with a real-time evaluation means for.

Images